[Bug] C++ API and core tests fail with "assert 3 == 0" across all GPUs and CUDA 13.x versions

Bug Description

C++ test suites //tests/core:core_tests and //tests:cpp_api_tests consistently fail with assert 3 == 0 across all tested GPU architectures (RTX 3070, B100-TS2, H100, A100) and all CUDA 13.x versions. The failure is 100% reproducible across every configuration, suggesting a systemic issue rather than a hardware- or driver-specific one.

Environment

• GPUs: RTX 3070, B100-TS2, H100, A100
• Arch: x86_64
• CUDA: 13.2.0 / 13.1.1 / 13.0.2
• OS: Ubuntu 24.04
• cuDNN: 8.9.7.29
• Myelin: 2.17.78+7
• CASK: 5.16.17+1
• Python: 3.12
• Package: qa_tar_py3.12

Failing Tests

FAILED test_torch_trt_cpp[//tests/core:core_tests] - assert 3 == 0
FAILED test_torch_trt_cpp[//tests:cpp_api_tests] - assert 3 == 0

Reproducible Configurations

All 22 logged test runs failed — no passing configuration observed.

Steps to Reproduce

1. Run on any of the listed GPUs with CUDA 13.x and the environment above
2. Execute the C++ test suites:
   • //tests/core:core_tests
   • //tests:cpp_api_tests

Expected Behavior

Both C++ test suites should pass with assert 0 == 0.

Start by running //tests/core:core_tests and //tests:cpp_api_tests in the listed CUDA 13.x environment, then trace where the assert 3 == 0 failure is reported. Compare the failing behavior across the provided GPU and CUDA configurations; done means both C++ test suites pass with the expected zero assertion.